package com.summer.NIO.udpService;

public class Util {

	public static int byteArrayToInt(byte[] b) {  
	    return   b[3] & 0xFF |  
	            (b[2] & 0xFF) << 8 |  
	            (b[1] & 0xFF) << 16 |  
	            (b[0] & 0xFF) << 24;  
	}  
	  
	public static byte[] intToByteArray(int a) {  
	    return new byte[] {  
	        (byte) ((a >> 24) & 0xFF),  
	        (byte) ((a >> 16) & 0xFF),     
	        (byte) ((a >> 8) & 0xFF),     
	        (byte) (a & 0xFF)  
	    };  
	}  
	
}
